REED-SOLOMON DECODING OF DATA READ FROM DVD OR CD SUPPORTS

摘要

An effective organization and the transferring data among the functional blocks of an integrated system (ECC-IC) of a read channel of data recorded on DVD-Rom, DVD-Ram, DVD-R or CD Rom for performing Reed-Solomon decoding including off-line heroic correction, or deinterleaving, Reed-Solomon decoding and correction, said integrated system including an input buffer (INPUT BUFFER), an interface with a microcontroller bus ( mu P IF), a Reed-Solomon decoder (REED-SOLOMON DECODER), an embedded RAM (DRAM) accessed through a 17-bit bus, a descrambling and EDC control block (DESCRAMBLING & EDC) for DVD modes of operation a descrambling block (DESCRAMBLING CD) for CD modes of operations, a data output interface (OUTPUT INTERFACE) and a timing control block (TIMING CONTROL), permits the decoding of the input data acquired through said input buffer (INPUT BUFFER) at a rate of up to four-times the reference bit rate of DVD formatted data using a clock for accessing said embedded RAM having a frequency half that of the clock that is used in said Reed-Solomon decoder, while reducing the number of accesses to said embedded RAM needed to perform the decoding.